MDL-14388 help file rewording

lang/en_utf8/help/data/tags.html

@@ -1,5 +1,4 @@
 <p align="center"><strong>Available Tags</strong></p>
-<p>Tags are place holders in the template which will be replaced by fields or buttons when entries are edited or viewed.</p>
-<p>Fields have the following format: [[fieldname]]</p>
-<p>Buttons have the following format: ##somebutton##</p>
-<p>Only the tags that are in the "Available tags" list can be used for the current template.</p>
+<p>Tags are place holders in the template, which will be replaced by fields or other items, such as an edit icon, when entries are edited or viewed.</p>
+<p>Fields have the format [[fieldname]]. All other tags have the format ##sometag##.</p>
+<p>Only the tags that are in the "Available tags" list may be used for the current template.</p>